Human Body Systems

What is the primary function of the skeletal system?

• To protect vital organs

• To store energy

• To enable movement

• All of the above

The human skeleton has how many bones in total (in an adult)?

• 206

• 250

• 100

• 500

Which type of bone tissue is dense and compact?

• Spongy bone

• Compact bone

• Bone marrow

• Cartilage

What is the name of the bone that forms the upper part of the arm?

• Femur

• Tibia

• Humerus

• Radius

Which of the following bones protects the brain?

• Sternum

• Skull

• Pelvis

• Ribs

The soft tissue inside bones that produces blood cells is called:

• Periosteum

• Yellow marrow

• Red marrow

• Cartilage

What type of joint allows movement in many directions, like the shoulder?

• Hinge joint

• Ball-and-socket joint

• Pivot joint

• Fixed joint

Which of the following is a long bone in the body?

• Vertebra

• Rib

• Femur

• Patella

What is the name of the connective tissue that covers the ends of bones in a joint?

• Ligament

• Tendon

• Cartilage

• Fibrous tissue

Which part of the skeleton supports the weight of the body and protects internal organs?

• Appendicular skeleton

• Axial skeleton

• Cartilage

• Bone marrow